I have begged several times for pics of the Bushmaster 22 conversion that show how that works. It looks to me like the bolt/carrier system is plastic and I believe that it may be very possible to get this system to run with a rLL.
The DIAS should run with most an 22 kit that runs with an M-16.
If anybody finds some pics that show the guts of the Bushmaster kit especially the upper from the bottom that shows bolt carrier system installed into the upper receiver would make it easy to determine if that would work with the link.
Also, I have been interested in the belt fed 22 Upper as described here:
http://quarterbore.com/forums/viewtopic.php?t=133
I don't know if this will run with the link yet but if it does you can bet that I will add that to my own "short list" of toys to add to the safe.